#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include<string.h>

int main()
{
	char arr1[] = "abcdef";
	char arr2[20] = "xxxxxxxxxxxxxxx";
	strcpy(arr2, arr1);
	printf("%s\n", arr2);
	memset(arr2+1,'5', 5);
	printf("%s", arr2);

	return 0;
}